Extension of the SIESTA MHD equilibrium code to free-plasma-boundary problems
| Autor: | Hugo Peraza-Rodriguez, Raul Sanchez, Mark Cianciosa, J. M. Reynolds-Barredo, S.P. Hirshman, J. Geiger, Victor Tribaldos |
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| Přispěvatelé: | Ministerio de Economía y Competitividad (España), Universidad Carlos III de Madrid |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Surface (mathematics) Ideal (set theory) Stochastic process Boundary (topology) Física Plasma Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas law.invention Condensed Matter::Materials Science Classical mechanics Physics::Plasma Physics law 0103 physical sciences Magnetohydrodynamics SIESTA (computer program) 010306 general physics Stellarator |
| Zdroj: | Physics of Plasmas e-Archivo. Repositorio Institucional de la Universidad Carlos III de Madrid instname |
| ISSN: | 1070-664X |
| DOI: | 10.1063/1.4986447 |
| Popis: | is a recently developed MHD equilibrium code designed to perform fast and accurate calculations of ideal MHD equilibria for three-dimensional magnetic configurations. Since SIESTA does not assume closed magnetic surfaces, the solution can exhibit magnetic islands and stochastic regions. In its original implementation SIESTA addressed only fixed-boundary problems. That is, the shape of the plasma edge, assumed to be a magnetic surface, was kept fixed as the solution iteratively converges to equilibrium. This condition somewhat restricts the possible applications of SIESTA. In this paper, we discuss an extension that will enable SIESTA to address free-plasma-boundary problems, opening up the possibility of investigating problems in which the plasma boundary is perturbed either externally or internally. As an illustration, SIESTA is applied to a configuration of the W7-X stellarator. This research was funded in part by the Ministerio de Economía, Industria y Competitividad of Spain, Grant No. ENE2015-68265. This research was carried out in part at the Max-Planck-Institute for Plasma Physics in Greifswald (Germany), whose hospitality is gratefully acknowledged. This research was supported in part by the U.S. Department of Energy, Office of Fusion Energy Sciences under Award DE-AC05-00OR22725. SIESTA runs have been carred out in Uranus, a supercomputer cluster located at Universidad Carlos III de Madrid and funded jointly by the European Regional Development Funds (EU-FEDER) Project No. UNC313-4E-2361, and by the Ministerio de Economía, Industria y Competitividad via the National Project Nos. ENE2009-12213-C03-03, ENE2012-33219, and ENE2012-31753. |
| Databáze: | OpenAIRE |
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